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Basic.vue
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Basic.vue
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<template>
<div class="scroll-wrapper">
<CdkVirtualScroll
ref="listRef"
:dataSource="data"
:height="200"
:rowHeight="20"
:bufferSize="20"
:bufferOffset="5"
getKey="key"
@scroll="onScroll"
@scrolledChange="onScrolledChange"
@scrolledBottom="onScrolledBottom"
>
<template #row="{ item, index }">
<span class="virtual-item" @click="onItemClick(item.key)">{{ item.key }} - {{ index }}</span>
</template>
</CdkVirtualScroll>
<IxSpace>
<IxButton @click="scrollTo(100)"> Scroll To 100px </IxButton>
<IxButton @click="scrollTo({ key: 'key-50', align: 'top' })"> Scroll To key-50(top) </IxButton>
<IxButton @click="scrollTo({ index: 40, align: 'top' })"> Scroll To 40(top) </IxButton>
<IxButton @click="scrollTo({ index: 40, align: 'bottom' })"> Scroll To 40(bottom) </IxButton>
<IxButton @click="scrollTo({ index: 40, align: 'auto' })"> Scroll To 40(auto) </IxButton>
<IxButton @click="scrollTo({ index: 40, align: 'top', offset: 15 })"> Scroll To 40(top) + 15 offset </IxButton>
</IxSpace>
</div>
</template>
<script setup lang="ts">
import { ref } from 'vue'
import { VirtualScrollInstance, VirtualScrollToOptions } from '@idux/cdk/scroll'
const listRef = ref<VirtualScrollInstance>()
const data: { key: string }[] = []
for (let index = 0; index < 1000; index++) {
data.push({ key: `key-${index}` })
}
const onScroll = (evt: Event) => {
console.log('scroll:', evt)
}
const onScrolledChange = (startIndex: number, endIndex: number, visibleData: { key: string }[]) =>
console.log('onScrolledChange', startIndex, endIndex, visibleData)
const onScrolledBottom = () => console.log('onScrolledBottom')
const onItemClick = (key: string) => {
console.log('click:', key)
}
const scrollTo = (value: number | VirtualScrollToOptions) => listRef.value?.scrollTo(value)
</script>
<style lang="less" scoped>
.scroll-wrapper {
height: 240px;
}
.cdk-virtual-scroll {
border: 1px solid red;
margin-bottom: 8px;
}
.virtual-item {
padding-left: 16px;
border: 1px solid gray;
height: 20px;
line-height: 18px;
}
</style>